you have to let them matchure pal dont no how long you no when they are ready wont be long if his dog is 15months cupple more months wont do it any harm
Ive only had 2 first crossers, a dog and a bitch, both were killing (rabbits) before a year old..but its always good to hear sensible views of giving any dog plenty of time to develope, both physically and mentally, havent ever spoilt a dog through entering too early, but Ive seen others who did spoil their dogs, and they werent deerhound crosses.
Canny looking dogs by the way
mine got his first buny at 8 months old then gave him 2